Insulator-clamp.



No. 810,618. PATENTED JAN. 23, 1906. W. G. CLARK.

INSULATOR (ILA-MP.

APPLICATION FILED APB..13,1904.

2 SHEETS-SHEET l.

No. 810,618. PATENTED JAN. 28, 1906.

W. G. CLARK. INSULATOR CLAMP.

APPLICATION FILED APRJSI 1904.

2 SHEETS-SHEET 2.

51mm WALTER 6 01A K UNITED sTATns r nTENT OFFICE.

' WALTER G. CLARK, OF SEATTLE, WASHINGTON.

, INSULATOR-CLSAMP.

To all whom it may concern:

- Be it known that I, WALTER G. CLARK, a citizen of the United States, and a resident of the city of Seattle, county of Kings, and State ofWashington, have invented certain new and useful Improvements in Insulator-Clamps, of which the following is a specification, accompanied by drawings. t

This invention relates to insulator-clamps for clam ing electric wires, more particularly hig -tension cables, to insulators; and the ob'ects of the invention are to im rove upon t e construction and efficiency 0 such devices and prevent the strain on the wire from being thrown u Further objects 0 inafter appear; and

on the clamp. the invention will hereto these ends the invention consists of a device for carrying out the above objects embodying the features of construction, combinations of elements, and arrangement of partshaving the general mode of operation substantially as hereinafter fully described and claimed in this s ecification and shown in the accompanying rawings, in which Figure 1 is a perspective view of the clamp. Fig. 2 is a plan view thereof. Fig. 3 is an end view. Fig. 4 is a detail view of one of the slotted bolts for tightening the clam -Fi 5 is a detail view, partly in section, of the fo llower and nut used with the slotted bolts shown in Fig. 4. Fig. 6 is a side elevation of an insulator with the clamp applied thereto, and Fig. 7 is a plan view of Fig. 6.

Referring to the drawings, A represents a suitable insulator provided witha top or cap B, having a groove C ada ted to receive the clamp. The clamp is pre erably constructed of suitable metallic'wire of any desired material or cross-section and is bent into the desired form. The clamp comprises the body ortion D, adapted to be secured to the insuator A, as shown, the body portion D substantially encircling the insulator in the groove C.

Wire-holding loops E are provided for the bod D and arranged at an angle to the plane of the body of the clamp. In this instance the wire-holding loops E are shown at substantially right angles to said plane; but it is to be understood that the conformation of the loops may vary and the angle at which they stand to the bod ortion may also vary as desired. As wil e seen, the loops are. 0 en from end to end to enable the sides of the loops to be drawn together to'tighten Specification of Letters Patent.

rammed Jan. 23. 1 906.

I Application filed April 13, 1904:- Serial No. 202,971-

the body upon the insulator and tighten the loops upon the wire. The loops are also preferably made, as shown, in one continuous piece with the body portion. When the clamp is in positon on the insulator A, as shown in Fig. 6, it will be seen that the wireholding loops E extend upwardly and afford provision for holding the wire F down upon the top B of the insulator. The to of the insulator may, if desired, be provide with a groove G for the reception ofthe wire F.

Suitable means are provided for tightening the clamp upon-the insulator, and preferably said tightening means are arranged between the wire F and the body portion D of the clamp which encircles the insulator A. Any suitable means may be provided for drawing the parts of the insulator tightly together, in this instance nuts' and bolts being provided, The construction shown com rises a slotted bolt H, having the slot 1 an screw-threads J. The slotted bolts H are slipped over the necks K of the wire-holding loops E, and wedge-shaped followers L, having tongues O. are adapted to slide in the slots 1. The screw-threaded n uf s\P on the tongues O are held in position in any suitable manner, as by upsetting the ends'of the tongues 0. Accordin to this construction the nuts 1? and the followers L form substantially one piece and are adapted to move together when the nuts are screwed up.

According to this invention it will be seen that the strain on the wire is not imparted to the clamp; but the wire is held firmly in place on the insulator without any substantial strain on the clamp.

Obviously some features of this invention maybe used without others, and the .inven tion may' be embodied in widely-varying forms.

Therefore, without limiting the invention to the construction shown and described nor enumerating equivalents, I claim, and desire to obtain by Letters Patent, the following:

1. An insulator-clamp, comprising a body portion ada ted to be secured to the insulator, said bo ybeing providedwith open wireholding loops formed in one continuous iece with the body and extending at an ang e to the plane of said body, the loops being adapted to hold the wire down upon the top of the insulator when the clamp is in position gherfion, for substantially the purposes set ort , holding loops forme ted to be secured to the insulay being (provided with open wirein one continuous iece with the body and extending at an ang e to the plane of said body, the loops being adapted to hold thewire down upon the top of the insulator when the clamp is in osition thereon, and means for tightening the parts of the body portion of the clamp upon the insulator, for substantially the purposes set forth.

3. An insulator-clamp, comprising a body portion ada ted to be secured to the insulator, open wire-holding loops extending at an angle to the plane of the body ortion of the clamp and adapted to hold t e wire down upon the top of the insulator when the clam is in position thereon, said loo s having necif portions formed of the sides 0 the loo s and means for drawing the necks of said wireholding loo s together to tighten the body portion of t e clamp upon the insulator, for substantially the purposes set forth.

4. An insulator-clamp, comprising a body portion adapted to be secured to the insulator, open Wire-holding loops extending at an angle to the plane of the body ortion of the clamp and adapted to hold t e wire down upon the top of the insulator when the clamp is in position thereon, and slotted screws arranged over the wire-holding loops, followers portion ada tor, said bo movable in the screw-slots, and nuts rotatable on the followers and forming one piece therewith, for substantially the purposes set forth. I

5. The combination with an insulator, of a clamp comprising a body ortion encircling the insulator, and wire-holding loops projecting therefrom and extending above the top of the insulator and adapted to hold the wire down thereon, whereby the strain on the wire is prevented from being thrown upon the clamp, for substantially the purposes set forth.

6. The combination with an insulator, of a clamp comprising a body portion encircling theinsulator, wire-holdin loops projecting therefrom and extending a ove the top of the insulator and adapted to hold the wire down thereon, whereby the strain on the wire is prevented from being thrown upon the clamp, and means for tightening the body portion of the clamp upon the insulator, for substantially the purposes set forth.

In testimony whereof I have signed this specification in the presence of two subscribmg witnesses.

WALTER G. CLARK.

Witnesses:

RUssEL A. COWLES, E. C. BOISE. 

